(1967). Philosophische Brocken de Omnibus Dubitandum est. Eugen Diederichs.
Cita Chicago (17th ed.)Philosophische Brocken De Omnibus Dubitandum Est. Düsseldorf: Eugen Diederichs, 1967.
Cita MLA (9th ed.)Philosophische Brocken De Omnibus Dubitandum Est. Eugen Diederichs, 1967.
Atenció: Aquestes cites poden no estar 100% correctes.